Corn-cultivator.



Patented May I3, |902.

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OHARLS M. CARLSON, OF ODEBOLT, IOVVA.\

H Corna-fot:

LTIVATO R.

sPEoIEIcATroN forming panter Lettere Harem; No. 700,017, dated May 13,1902.

Application iledIebruar'yAIOL 1902. Serial No. 93,351." (Ndmodelg f 1'-To @ZZ whom, 25 may concern/:f j

Be it known that I, CHARLs M. CARLSON, a citizen of the United Statesof'America, residing at Odebolt, in the county of Sac and State of Iowa,have invented certain new and useful Improvements in Oorn-Oultivators,of which the following is a specification.

This invention` relatesV tovcultivators, and more particularly to 4thatclass known as straddle-row sulky-plows.. Y

The objectV of this invention is to produce a plow in which the shovelsmay be automatically elevated for the purpose of disengaging weeds orotheraccumulations;.furthermore, to provide a frame'which is adjustabletransversely/,said frame having secured thereto the plow-beams.

Furthermore, the object of the inventionis to produce a plow which shallpossessadvan-l tages in points of simplicity, efficiency, andinexpensive construction. ,j

With the foregoing and other objects in view the invention consists inthe detail of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed. v

In describing the inventionin detailvreference will behadvto theaccompanying draw-n` ings, forming part of this specification, where'-in like characters denote corresponding parts in both views, and inwhichy V Figure 1 isa plan view of a cultivator em-y bodying theinvention. Fig.2 is'a side .view thereof. Y l

In the drawings, 1 indicates an arched axle having ground-wheels 2. Arectangularframe 3 is secured to the axle and held rigid'by the braces4. A tongue 5 is secured. tothe axlel: and extends out` over the frame,to which it is bolted. A doubletree Gis pivoted to the tongue, hasdownturnedends to which the singletrees 7 are connected. An archedframe'- 8 extends over the tongueiand has depending ends, to which theplow-beams 94 are pivoted.'I

A connection 10 fromthe 'doubletrees to each': end 'of the'archedframe'acts as means for drawing the plow. 'Ihe beams are provided withsuitable shovels lland stirrups 12, the

latter being engaged by the operator to guide theshovels. A seat 13 issupported by the spring 14, extending across the frame. ver 15 ispivoted to the bolt 15 and to the f 'the ground-wheel.

nallyaway from the wheel, where they are .a'rcliedframm said levermoving the arched .frame fromy side to side, according to the movementdesired in the .plows. Aguide 16 extends across the arch under thetongue, and a link 17 ispivoted to the guide. and `to the ibolt` I5?, bywhich the lever l5 'and the doubletree are connected to the tongue.

18 is mounted on a support 19which extends betweenv the sides of therectangular frame, and supports 20 extend from the support 19 to theaxle. A segmental rack 2l is secured to each support ,20, and a lever 22is pivoted to each segmental rack. Spring pressed pawls of any suitableconstruction'are proadjustinents on the segmental racks. The ends of thelevers .'opposite the'handles are connected to the plow-beams by meansof the 'chains23 or their equivalents. Hencethe said. beams may belifted and held elevated ,bythelevers-,when the pawls lengagethesegmental raeks.

Further means are providedfor .elevating the shovels periodically at thewill of the operator for discharging deposits of grass o r Weeds, saidmeans comprising cranked levers 24, whichv are .journaled in bearings25, atv"ta'lohedto the horizontal portion `of Vthe axle. 4One"extensionof'each of the crank-levers is connected byv a chain or its equivalentto a shovelfbeam, and the other extension off'each vlever isto beengaged by a tripping-cam 26, secured to the under surface of the fellyof The extensions lie nomi- 'heldby springs 27, but are projected intoline -wherethe cam will engage them by means of the levers 28,whichare-fulcrnmed on the hooks 29g-secured to therectangular frame.VVhen'there is an accumulation on the shovels, the/handle'ends of thelevers are pulled inwardly and the opposite ends carry the extensions ofthe cranked levers into the paths shovel, when the deposit willbedischarged..

veyed directly to the end of the beams, and the said beams maybe shiftedtransversely ofthe sulky by the manipulation of the lever 15. It isnoted that all of said levers are within the reach of the drivers seat.

A rack `vided for the levers to hold them at varying vof travel of the"cams, thereby causing thel cranked lever to work and lift the'beam andBy the construction shown the'draft'is con- IOO The construction,operation, and advantages will, it is thought, be understood from theforegoing description, it being noted that various changes may beresorted to in the proportions and details of construct-ion for carryingthe same into practice.

Having fully described the invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a cultivator an arched axle, a frame rigid with the axle, amovable arched frame, means for adjusting it, beams having theircndsconnected to the arched frame, cranklevers mounted in the bearings,connections from the cranked levers to the beams, camtripping blocks onthe wheels and means for projecting the crank-levers into contact withthe tripping-blocks.

2. In a cultivator, anarched axle, a frame rigid thereon, a movableframe having depending ends, segmental rackscarried by the rigid frame,levers pivoted on the racks, connections from tho levers to the beams,cranklevers mounted in bearings on the axle, connections from the beamsto the crank-levers, springs encircling the crank-levers, trippingblockson the wheels and levers for projecting the crank-levers into the pathof travel of the tripping-blocks.

3. In a cultivator, an arched axle, ground- Wheels thereon, a framerigid with the axle,

CHARLS M. CARLSON.

\Vitnesses:

JOSEPH SAMPsoN, NELS DANILsoN.

